Headlight.



R. (x STANDERWICK.

HEADLIGHT.

APPLlcATloN FILED JUNE 3.1915.

Ll.. Patented 00u26, 1915.

2 SHEETS-SHEET l.

His Mmmm- R. G. STANDERWICK.

HEADLIGHT.

APPLICATION HLED JUNE 3.1915.

Patented Oct. 26, 1915.

2 SHEETS-SHEET 2.

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Specification of Letters Patent.

Applicatibn filed .Tune 3, 1915. Serial No. 31,8411.

To all whom t may concern:

Be it known that l, Ritornano G. SrANniinwion, a subject ot the King of Great Brit ain, residing at Lynn, in the count-y of Essen, State of Massachusetts, have .invented certain new and useful improvements in Headlights, of which the following is a specification.

lli/ly invention has reference to a headlight, and especially to a headlight using an incandescent lamp as the source of light, and more particularly relates to a simple and convenient support for the lamp by which the light source is universally adjustable with reference to the relicctor with which the same is used, and by which the same may easily be secured in its adjusted. position by a single clamping operation.

TWhen it is desired, by means 'of a parabolic reflector, to ,provide a beam of parallel rays troni a source of artificial light, it is, or course, important that the light source should, as nearly as possible, coincide with the focus oi the parabolic reliector, since any slight displacement therefrom, such as is likely to result inpractice from the rather severe shocks which the headlight receives from the locomotive or other vehicle on which the sanic is used, seriously impairs the light beam, and this effect is especially pronounced. where a lamp provided with a concentrated filament, such, for example, as is disclosed in an application forlietters Patent which was filed on or about November 23th, 1913, by M. J. Mackay, Serial No. 861,279, is used. My invention provides means by which the operator may readily 'bring the filament of the lamp to the focus of the reflector and secure the saine in its adiusted position.

llor a fuller 'understanding of my invention, reference may bellad to the accompanying drawings, in wnich'- Figure 1 is a vertical section of a device embodying one form of my invention; Fig. 2 is a plan view oli the lower portion of the ball socket and ci the split loa-ll engaging the same; and Fig. 3 is a longitudinal section showing a modified tor-in of my invention.

The form of my invention shown in Fig. 1 is applicable to any headlight, and may readily be applied to headlights already in use.. A part of the casing is represented by the numeral 10, and upon this casing is mounted a base support 11 provided with the socket.

suitable flanges, by which the same' is .se cured to the casing, and with a transverse opening 12. The base support is also provided with registering openings 13 in the portions above and below the opening 12. The lower opening is provided with screw threads at 1&1, and is adapted to receive a screw-threaded thimble 15, provided at its enlarged upper end with teeth 16 by which the saine may be turned and the thiinble ad justed longitudinally. The upper end of the thiinlole is formed with a spherical recess 17 which, together with a similar recess 18 in the upper portion of the base support, and formed as a continuation of the opening 13, forms a ball socket for the reception of a split clamping member, here shown as a ball., 19, preferably formed oi two sections 19a and 19", which are here shown as separate. It will be understood, however, that any other equivalent form of split ball maybe used. llt is, of course, unnecessary that the entire ball should be spherical in form, as it is only necessary that those portions should be spherical which are received in A hollow lamp standard 2O passes through an opening in the ball 19 and through an opening 22 in the reflector 21, so as to bring the light source, which is here shown as an incandescent lamp, in the focus of the parabolic reflector. The conductors 24 for the incandescent lamp pass through an opening 25 in the lamp standard, and are carried through the standard to the lamp. Screws 26 and 27, tapped into the base support l11 and into the lamp standard 20, respectively, project, one with its shank and the other with its head, into the spaces between the two sections 19a and 19" of the ball, and thus prevent rotation of the ball with respect to the base support, and thus injury by the twisting of the conductors is avoided. It will be understood, however, that both screws may engage the same space at one side of the lamp standard 20, and in Fig. 3 this construction is illustrated.

The manipulation ot the lamp support illustrated in Fig. 1 is as follows: When it is necessary to focus the incandescent lamp, the thinible 15 is moved longitudinally away :trom the ball, preferably by means of a suitable wrench which engages the teeth 1G. This movement ot the thiinhle loosens the ball in its socket, and at the same time permits rotation thereof in any direction,

Patented ct. 26, 1h15,

and may be brought into the exact focus thereof, and the operator may conveniently retain the same in this position with -one oily-light at the, foous of the reilector. It

, through an opening a hand While he again moves the thimble longitudinally until the ball and the standarlfare locked in position with the source will;y of coursebe understood that, the opensary rotation of the-ball Within its socket.

' In Fig. 3, I have shown a modification of my invention', inr 'which the base support is applied to the backpf the headlight casing,

" and the thimblei, which clamps the ball in ,position extends without the casing, and is ro'tatablefby a suitable: handle without the casing. 4In this form of my invention, thel support '11"1s provided with a contracted portion 11a, the reagr' end' ofi which enten/,dslv

in the casing'lGJto which the base support is secured by screws or other suitable means. The thimble .1 5ft' is provided with a hand-Wheel i6ai'le cated Without the headlight casing. TheK lamp support also extends Without the casing, so that the light may be readily7 adjusted from the exterior of the headlight.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together With/the apparatus which I now conside'fto represent the lbes'tferrlfeodimerit thereof; (but I desire to have itiinderstood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

What I claim as new, by Letters Patent of the 1. A lamp support for a headlight comprising a split clamping member, a lamp standard passing through said membe'r, and

and desire to secure United States, is :--v

through said member,

a movable member provided with a recess for receiving the clamp, the recess being so formed as to close the clamp when the member in which it is located is moved longitudinally. e

2. A 'lamp support for a headlight coinprising a perforated base support, a screwthreaded member received in said support and forming ytherewith a ball socket,l a split ball adapted to be received in said socket, and a lamp sitandard passing through and longitudinally movable in said ball. ing 13 in the upper portion of the base sup- ,port and the opening through the thimble 15 are sufficiently-'large to permit of the neces- 4ball and extending i'hroughthe opening of said reflector. nl 4. A lamp support for a headlight coinprising a perforated`base support, a screwthreaded ;nember received in said support and forming therevvitha brllsocket, a split ballk adapted'tof .beredeived in said socket, a hollow lamp standard passing through and longitudinally movable in said vball and adapted to carry the conductors to the light on said standard, and means for preventin rotation of said ball with reference to sai standard.

5. In a headlight, a casing, a base support mounted upon said casing, a screw-threaded member received in said support and forining'therewith a ball socket, said member extending Without the casing of the headlight, a split lill received in said socket, and a lamp standard passing through and longitudinaiiy movable in said ball and extending whereby the light is adjustable Without the casing of the headlight.

REGINALD G. STANDERWICK. 

